using in and as with a struct

[Craig]

How can you get a custom struct to work with the "in" and "as" keywords, for
example, (myObject is myStruct).....see full code example below....
private void CreateArray(ArrayList myArray)
{
ArrayList newArray= new ArrayList();

foreach (object item in myArray)
{
if (item is myStruct) //this doesn't work, myStruct is a
ValueType
{
newArray.Add(new exampleType1
(item as myStruct)); //this doesn't work, myStruct
is a ValueType
}
else if (item is anotherStruct)
{
newArray.Add(new exampleType2
(item as anotherStruct));
}
}
}

[Mattias Sjögren]

How can you get a custom struct to work with the "in" and "as" keywords, for
example, (myObject is myStruct).....see full code example below....

is should just work with structs.

as can't be used with structs since as would return null if the cast
fails, and value types aren't nullable.

Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org
http://www.msjogren.net/dotnet/ | http://www.dotnetinterop.com
Please reply only to the newsgroup.

[sadhu]

The is operator should work fine with value types. Are you getting
compiled time errors? As for 'as', it works only if the destination
type is a reference type. You can simply do
if (item is mystruct)
val = (mystruct) item;

Regards
Senthil